EntityQ943247· pop 36· linked from 801 articlesextinctionSign in to savein astronomy, the absorption and scattering of electromagnetic radiation by dust and gas between an emitting astronomical object and the observerConnectionscolor indexEntityEarthConceptwaterEntityastronomyEntitystarEntityhydrogenEntityoxygenEntityredEntityMilky WayEntityblueEntitytemperatureEntityInternational Standard Book NumberEntitymatterEntityartificial satelliteEntityatmosphere of EarthEntitylatitudeEntityX-rayEntityultraviolet radiationEntityhorizonEntityelectromagnetic radiationEntityCategoriesConcepts in astronomyExtragalactic astronomyGalactic astronomyObservational astronomy